Box machine



Filed June 13, 1930 5 Sheets-Sheet l WTLL'LLL'W" 53j l li l l il 7 IN VEN TOR. v

l ATTORNEY.

E. G. RIDER BOX MACHNE May Z, 1933.

5 Sheets-Sheet 2 Filed June l5, 1950 INVENTOR. 1Q/V557 Q. @fa/Ze @www @om l ATTORNEY.

E. G. RIDER BOX MACHINE May 2, 933.

Filed June l5, 1950 5 Sheets-Sheet 5 ww @om l ATTORNEY.

May 2, 1933. E. G. RIDER "1,907,004

BOX MACHINE Filed June' 13, 1930 5 Sheets-Sheet 4 I N VEN TOR.

E19/VEST G' .1P/DEZ? @y I@ A Mww ATTORNEY.

E. G. RIDER.

Box MACHINE May 2, 1933.

Filed June 15, 1930 5 Sheets-Sheet 5 EB/VESTG 1055 i ATTORNEY.

Patented May 2, 1933 Parent carries l ERNEST G. RIDER, OF PHLADEL'PHIA, PENNSYLVANIA, ASSIG-NOR TOSTOKES & SMITH COMPANY, 0F PELADELPEA, VANIA PENNSYLVANIA, A CORPORATION QF PENNSYL- BOX MACHIN E Application led June 13,

My invention relates to the art of forming boxes, cartons, containers, or equivalent, hereinafter generically termed cboxes either by applying wrappers, sheets, labels, or equivalent, all hereinafter generically termed wrappers, and particularly tabbed wrappers; or by applying tabbing or reinforcing structure without wrappers to blanks oif box material, and particularly to groups of separate, individual box components, sections, or elements of box material.

In accordance with one aspect of my invention, each blank while in substantially Hat condition is registered in adhesive engage ment with a wrapper, preferably tabbed, or `with tabbing structure unattached to a wrapper, at a station somewhat removed from the box forming mechanism, and the blank is thenv fed to the box forming mechanism, the feeding mechanism returning to its original position in a different path to permit register of a second blank with'a wrapper er tab structure after the feeding mechanism has passedthe registering station in its forward movement. During the registering and feeding operations, the tabbing structure applied 4to the blank, whether attached or unattached to a wrapper, projects in part beyond the blank, and during th-e box forming operation while the walls of the box are held or sup-l ported in box-forming position, the projecting portions of the tabs are brought into engagement to overlie corners of the box.

In another aspect of my invention and more particularly, the wrapper or tabbing structure is applied to a box component adapted to form for example, the bottom and side walls orn a box, and at a box-forming station, end` wall components cut from continuous strips of box material in timed relation to the feeding mechanism for the first orm'an component, are. brought or held in proper box-forming position relative to the main component; the tab structure projecting beyond edges of the main component being brought into engagement with the end wall components during the boxtorming operation to overlie edges of the box'.

Specifically, the feeding mechanism for the box blank or the main component, is mount- 1930. Serial No. 460,859.

ed upon a unit comprising box wrapping or forming members adjustable according todimensions of the boxto be formed, to effect simultaneous yadjustment of the feeding mechanism and the box forming members; 'i

more specifically, the unit is opposite a similar unit carrying the mechanism for feedingv continuous strips, for cutting box end walls therefrom, and for transferring the end walls to form block structurey or equivalent, of the box forming mechanism.

My invention resides in the methods and features of combination, constructiom and arrangement hereinafter described and claimed.

For an understanding of my invention and ior illustration of one of the forms my apparatus may take, refe-rence is to be had to the accompanying drawings, in which.:

Fig. -l is an elevational view of one end of abox forming machine.

Fig. 2 is an elevational view of the other end of the same machine.

Fig. 3 is a plan view othelmachineof Fie'.- l and the end ot' a wrapper conveying mechamsm.

Fig. 4 is an end view in section of the registering table shown in Figs. l. to. 3.

Fig. 5 is a pllan view ofl the registering table with a box blank thereon registering withV tabbing structure unattached to a wrapper.V

Fig. 5a is a plan View of a one-piece box blank.

Figs. 6, 7 and 8 are detail views on enlarged scale of the blank registering stop mounted upon the registering table.

Fig. 9, on enlarged scale and with parts broken away, discloses feeding mechanism shown in Fig. 2.

Fig. 10 is a detail View, in plan, of parts shown in Fig. 9.

Fig. ll is a detail View in elevation, of gripper mechanism shown in Fig. 9. v

Fig. l2 with parts broken away, discloses the opposite side of the feeding, mechanism shown in Fig. 9.

Fig.v 13' is a front view in elevation with iarts inr sectionv and parts broken away' for clarity, of the feeding mechanism of Figs. 9 and 12.

Fig. 14, a detail view on enlarged scale, is a section taken on line 14-14 of Fig. 12.

Fig. 15 is a detail view on enlarged scale of gripper and actuating means therefor, disclosed in Figs. 9, 12 and 13.

Referring particularly to Fig. 1, upon the pedestal or base 1 is mounted a hollow co1- umn 2 which houses the operating cam 3, having cam grooves, one of which, groove 4, is indicated, for controlling the movement of the main and auxiliary plungers of the form block structure F, (as hereinafter described). The cam which is suitably mounted upon a shaft 6 is driven through worm 7 and gear 8 by any suitable source of power,

suitably connected to the pulley and clutch mechanism 9. At its upper end the shaft 6 is provided with a bevel gear 10 which meshes with the circumferentially spaced bevel gears 11, each of which is associated with the mechanism of one of the slides, units or slide units 12, generally similar to those disclosed in Federwitz et al. 'Patent #1,541,036. End forming rolls associated with one pair of units 12, side forming rolls 14, 147 corner lap turning lingers 15, 15, and the marginal turnin fingers 16, 16, are all operated in proper sequence and in timed relation to movement of the form block structure F, through mechanisms each including the cams 13 and 17 and a gear train 18 driven from the corresponding gear 11. The construction and operation of the mechanism of the slides form per se no part of the present invention and are described in the aforesaid Federwitz patent.

To the rear slide 12 there is attached as by bolts 18a a bridge 19 having feet 20 adjustably clamped, as by bolts V21 to the table 22, mounted upon the upper end of the column 2. Upon the bridge 19 are adjustably mounted the strip-feeding mechanisms 23, 23, and box-end gripping and transporting mechanisms 24 and 24. The operating shaft 25 of these mechanisms is journaled at substantially its central position in av housing 26 mounted upon the bridge 19. The strips S of cardboard, or other suitable box material, are supplied to the feeding units 23, 23 from reels 27, 27 mounted upon brackets 28 bolted or otherwise secured to the opposite ends of bridge 19. By mechanism more fully described in my copending application Serial No. 425,751, filed February 4, 1930, each strip is fed to knife structure 29, 29 of the feeding mechanism which at timed intervals is caused to move to sever the strip. Prior to the cutting, the ends of the strip are held by the grippers 30 at the end of a swinging arm 31 of the transfer mechanism 24. After the strip is cut to form a box end wall, the arm 31 swings inwardly to the position shown in Figs. 1 and 2 to bring the end wall components against Vthe ends of the form block structure F.

Before the end wall components are released bythe grippers 30, the gripping structures 32 at each end of the form block register the top edges of the components and clamp them securely against the form block, whereupon the grippers 30 open and the arm 31 swings back to its original position to receive the formed edge of strip S.

The mechanism thus far described forms per se no part of the present invention and is fully described and claimed in my aforesaid co-pending application.

Referring particularly to Figs. 9, 12 and 13, upon opposite sides of the front slide unit 12 are mounted guides 33 for the reciprocating members 34 to the top of each of which is secured one section of the split registering table 35, the U-shaped yoke 36 joining the two sections of the table and carrying the adjustable abutment 37 or equivalent, whose purpose will hereafter be explained. Upon an extension of the shaft for cam 13, (Fig. 9) which effects operation of a side folding roll 14 and turn-in fingers 15, 15, is mounted the cam 38 having a groove engaging a roller at the end of one arm of a bell-crank lever 39 pivoted at 40 to slide 12 and whose other arm is connected by link 41 to a second lever 42 attached to shaft 43 which extends through the unit. To the opposite end of shaft 43 (Fig. 12) is attached a lever 44. The ends of levers 42 and 44 are connected by links 45 and 46 respectively, to the reciprocating members 34 which support the registering table 35.

Referring to Figs. 1, 9 and 12, the cam 47 mounted coaxially with cam 38 is provided with a groove engaging the cam roller 48 secured intermediate the ends of arm 49 pivoted at 50 to the slide unit 12. The other end of the arm is connected by link 51 to a gear segment 52 pivotally mounted at 53 to the slide unit, and meshing with gear 54 attached to one end ofshaft 55 to the other end of which on the other side of the slide unit is attached a coupling plate 56 (Figs. 9 and 13). Bolts 57 extend through elongated slots 58 in the coupling plate 56 into the gear 59 adjustably to clamp the gear which is otherwise freely rotatable upon shaft 55, in predetermined relation with respect to plate 56. The gear 59 meshes with gear 60 attached to shaft 61 which extends through the spaced end extenlit) sions 62 projecting forwardly of the slide unit 12 and to which the sprocket-s 63 are keyed or otherwise attached.

To the top of the slide unit housing, is secured as by screws 64a, a guide member 64 extending from the front of the machine toward the path of movement of the form block structure F, to direct the chains 65, 65 driven by sprockets 63. As shown most clearly in Fig. 14, the guide member 64 is provided with a large central depression with two spaced ridges or upstanding portions extendingl lengthwiseof the slide. The guide plates 67 secured tothe top of guide member' G4 are each recessedftoprovide a dependentridge 68- disposedabove the corresponding r-idge of '5 the guidemember. Eachpair of upper and lowerl ridgesr 68, 616, forms a slot ratherA closely fittingY thecross links` of each chain, the side links of thechain, cooper-ating with the sides of theridges to` prevent: laterall displacement. of-:the chain.

The forward ends of the chains 6.5.are connected by a member 69 having a part extending abovethe. top.y of the guide plates 67 to providea pivot for the gripper arms 7 O rotatably mounted thereon as by screws 71, Fig. 15. The forward ends of the arms, which are preferably provided with rollers 70a, terminate oppositey a flat. plate 72 attached to or integral with a forwardly extending portion ofmember 6.9.. The forward end of the extension` 73e terminates in a shoulder 74- substantially at right angles to plate 72 to provide a. registering stop, or abutment for a box(4 blank or component B. Springs 75 bias the rollers 70a towardengagement with plate 72 to grip the-blank. 'As the` gripper mechanism approaches the path of'movefment of the form block by the chain 65, the supporting member 69 engages the cross bar 7 6 Fig. 10)'mounted at the ends off rods 77 s-lidable in the blocks 7 8. on opposite sides of the chain guide 614C. The expanded springs 77a between the heads 80 of the rods and the corresponding faces of guide blocks Z8-normally maintain the crossbar 76 in the position indicated in Fig. 10. The springs 77a` in resisting movement of the cross bar when engaged by the gripper support member` 69', take up thelostmotionor slack in thechain 6'5 to ensure an exact extreme forward position of th-e gripper member. The tubes 8l, 81y between the blocks 78 and the abutment 79 may be provided to enclose the springs 7 7a and rods 77. By properly correlating the internal' diameter of the tubes and the' diameter of.l the heads 80 of the rods, 'the tubes may at least assist in the guiding of the cross bar.

A substantially similar arrangement is utilized to remove the` slack ofthe chain at the end ofi its backward. or return movement. Referring particularly to Figs. 12 and 13, the rod 82 guided by the blocks 83, 83, secured to the chain guide 84, secured as by bolts 85 to the lfront end ofthe slide unit, is

engaged by the cross bar 86 extending betweeni the chains asthey approach the end oftheir return stroke. The-spring 87 between the lower block 83 and a collar 88 secured to shafty 82, is compressed'by engagement offrod 82 and bar 86'to take the slack out ofthe chain so that it will immediately move forward when the sprockets rotate in a direct-ion to move the chain in its blank feeding movementtowarda form block. Ifl desired, the

adjustably fixed front stops 90 may be provided.

The cam mechanism so raising and lowering the registering table is so designed and timed that the table is raised during return movement of the gripper and its support. At the end of the return movement, the table is lowered below its normal position, to cause the button 37 to open the gripper jaws for insertion of th.e rear edge of a box blank. Thereafter the table is raised to normaly position permitting the gripper to close and the gripper supporting member 69 moved forwardly to slide the box blank to which sheet. material as a wrapper, tabbed or untabbed,

or tab structure without a wrapper has beenl applied.

In the operation of the machine, an operator removes a freshly coated wrapper W preferably provided with tabs t which may be transported adjacent the wrapping machine by a conveyor C, such as for example, the suction conveyor described in Stokes Patent 1,701,317 which receives wrappers from a gluing machine. The box component B, which may, as showin-be adapted to form the bottom ZJ and sides s of a box, is registered` with the wrapper W on the table 35, which is preferably provided with transparent or translucent panels 91 beneathV which are disposed sources of light, as electric bulbs 92. The registering is effected in the usual manner by aligning the scoring CZ of the blank component with the corner notches n of the wrapper W. Contact between the rear side panel and the corresponding wrapper portion is not effected at this time. The registration may bey previously effected and a supply of assemblies positioned near the operator but this is not desirable as it requires storage and transportation of the assemblies and reactivation of the adhesive. The free rear right-hand corner of the blank B, Fig. 3, is brought by the operator into the notch 93 ofthe stop member 94 which is adjustably mounted in the block 95 capable of adjustment in slot 96 of table 35. This effects alignment of the edges of the blank with corresponding edges of the form block F.

The stop 93 is slightly spaced from the top of table 35 to permit the rear side panel of the wrapper and the tab structure t thereon, which is of greater length than the box side wall, to slide under the stop during this movenient. At this time, the table is in its lower position so that they abutment 37 bearing against the tail end of lever 70 holds the gripper release 7 Oa out of contact with the plate 72, permitting the rear edge of the blank to be brought against the stop shoulder 74 of the lower gripper member.

Thereafter, the table is raised to effect closing of the gripper mechanism which slides the blank with the wrapper adhering thereto along the topy of the registering table substantially to the position shown in Figxl by the mechanism above described, the forward movement stopping when the bottom panel of the blank, which projects beyond-the top of the table 85 is in register with the form block F.

In the meantime, by mechanism above briefly described, end wall boX components have been supplied to and are held in engagement with the ends ofthe form block-F while stationary in its upper position.

Upon descent of the upper form-block F, the bottom panel Z) of the blank is clamped between the upper form block F and lower form block F1, continued downward movement of the form blocks pulling the trailing side panel of the boX blank from between-the gripper aws which oHer little resistance.

Thereafter the wrapping operation proceeds in the usual manner, the side rolls 14C, 14 bringing the side panels a of the box blank into substantial vertical position a-ndwiping the corresponding wrapper 'panels intimately into engagement therewith, the turn-in tools 15, l5 folding the turn-in flaps y of the wrapper side -panels into engagement with the separate endwall components E and the end rolls wiping the end panels e of the wrapper into engagement with the individual boX ends and the turn-in flaps previously applied thereto. During this wrapping operation the tab structure t is brought to overlie the corners of the box formed by the abuttingY edges of the separate components B, E, and E. lVhile the! wrapping operation is being effected, another set of box components are cut from the strips S and upon return of the form block F to its upper positionv are delivered thereto. 4

By manually inserting previously prepared end wall components beneath the form block clips 32, or equivalent, the mechanism for feeding strips S, cutting boX components, and delivering them to the form block may be dispensed with but this is not ordinarily desirable as a second roperator would be needed to maintain satisfactory speed of operation, and additional transportation and storage of the prepared components with attendant disadvantages, would be involved.

Tit-h the construction described, as soon as one blank has started on its movement toward the form block, the operator is free to pick up another blank and wrapper, and' register them upon the table as soon as the gripper has passed beyond the point atwliich it would interfere. After the blank B and wrapper is removed from the gripper by the form block, the registering table-is raised, the gripper returning below the table so as not to disturb the blank and wrapper being registered or in register with each other upon the table. .Upon return of the gripper to its rear position, the table is depressed, opening the gripper jaws, and the operator maythe'n stops 94 and 74:.

align the registered blankand wrapper with the stops 94 and 7 4. As the Voperator is free for a substantial part of the operating cycle and the registering of the wrapper and blanks may be effected while the machine is in operation, the number of boxes which may be formed and' wrapped in a given interval of time is greatly increased. The operator has ample time after one assembly has started forward to pick up a wrapper and blank and register them'upon table 35, so that a second assembly is ready for insertion in the grip.- per mechanism when its support returns to the original position. The operation of the box machine can be continuous though if necessary, bythe clutch mechanism provided, can be restarted for each cycle.

f The box blank need not be formed of several components, but may consist of a single piece, as of the form or shape shown in Fig. 5a. Under these circumstances the mechanism foi1 feeding and 'cutting end wall components from the continuous strips S may be omitted or if present, disengaged. The operator as before, will register the blank with the wrapper and then the assembly with the The feeding of the assembly by the reciprocating gripper, the 4box forming and wrapping operations are -as above described. y

The same mechanism may also be utilized to form unwrappechstayed boxes of one or more pieces of 'box material. Referring to Fig. 5, for example, the blank B is brought into engagementwith the re-enforcing strips or tabs t, either upon the table 35 or prior to the registering of the tabbed blank with the stops 94 and 74. The rear end of at least the right hand tab,.Fig. 5, is not applied to the rear side wall to permit it to extend underneath the stop 93 which receives the rear right corner of the box blank B during the alignment effected by the operator. LThe assembly consisting of the uncovered blank and tabs is moved into the path of the form block structure to which has been supplied, as above described, end wall components which, during descent of the form block, are attached to the bottom and side panels of the blank B, the projecting turn-in portions fm of the tabs during the wrapping operation being folded over the top and down the inside of the boX to reenforce the corners.

The saine machinemay be used to form stayed unwrapped boxes from one-piece blanks; for example, tabbing strips m may be'applied to the one-piece blank -of Fig-5a, so that the stripsare in the same'position shown in Fig. 5. The blank with the strip projecting: therefrom is fed, as previously described, into the path of the form block and during subsequent operation of the machine the side and endwall, portions of the blank are bent into theirboX-forming position 'and attached by the staying or tabbing. strips fm.

For one-piece blank work, the strips S from which 'the end wall components are cut in vthe makingof three-piece boxes, are left out "of themachine, or if they are permitted to remain in the ma'chine,`the feeding mechanism is disconnected or rendered inoperative in suitable manner. Of course, if the machine is to be Aused exclusively for making of boxes from one-piece blanks, the strip-feed'- i'ng mechanis'msf, 23', box andtransporting mechanisms 24, 24 and associated parts may begomitted altogether from the machine.

adjusting the machine for a different width of boxfor which a correspondingly different width o`f form block will be used, the a'djistment of the front slide l2 also effects adjustment 4of the feeding table so that its forward edge is more or less closely adj acent the path of movement of the form block F. Theadjustment of the opposite slide effe'c'ts proper relation of the members 30 for the boxends for `the new width of box. For boxes off different dimensions, it may be necessary to adjust the'stop 94 transversely of block V95 and the latter transversely of the table y35, in slot 96. It may also be necessary to ychange the 'forward position of the gripper member, -b'y loosening the nutsy 57 and effect ing vproperangular relation between the gear 59 and plate 56. The fixed stop 90if used, mii-st 'be `c"orrespond'ingly adjusted. The adjustments described permit the same machine to be used Vin the making of boxes differing substantially inlen'gth, width, and height.

For brevity of the appended claims, the termub'ox blank shall be considered` to mean a piece of box material adapted to form one or more, or all box panels or walls, and the term sheet material generically to compre head wrappers, tabbed 'or imtabbed, or tabbing structure without a Wrapper.

What I claim is:

l. A box machine comprising form block structure, supporting structure Aupon which an'assembly comprising a box blank and sheet material adhesively attached thereto and projecting'the'refronnis registered, and reci`proeating structure movable on one side of said supporting structure in moving said assemblyfroin said supporting structure toward said form block structure and onr the other side o-f said supporting` structure in its return movement.

A box machine comprising form block structure, supporting structure, reciprocating structure rmovable on one side of said supporting structure in moving toward said form block structure and on the other side thereof in its return movement, and means for effecting relative movementof said supporting structure and said transporting means 'di'irin'g `return movement of the latter to leave the surface of said supporting structure unobstructed.

3. A box machine comprising form block structure, supporting structure, reciprocating feeding structure movable on one side of said supportingstructure 1n moving toward said form block structure and on the other side thereof rin its return movement, 'and means for elevating said supporting structure during return movement of said feeding structure to leave the surface of said supporting structure unobstructed.

1. A box machine comprising form block opening of said gripper mechanism, and for raising said supporting structure. to normal position before forward movement of said transporting structure.

5. A box machine comprising form block structure, supporting structure upon which an assembly comprising a box blank and adhesively attached sheet material is aligned, and structure for pushing` said assembly along said supporting structure toward Vsaid form block structure including gripper mechanism for holding the rear edge of said box blank.

6. A box machine comprising movable form block structure, a unit adjustable toward and away from the path of movement of said structure and carrying box forming mechanism, supporting structure mounted upon said unit and adjustable therewith, and structure for moving a blank and sheetimaterial assembly along said supporting structure into the path of movement of said form block structure.

7. A box machine comprising form block structure, supporting structure upon which an assembly comprising a box blank and projecting sheet material is aligned, gripper mechanism for holding the box blank, means for reciprocating said gripper mechanism to transport said assembly toward said form block structure including a cam, and means for raising and lowering said supporting structure for return and forward movement respectively of said gripper mechanism Acoinprising a .second cam.

8. A box machine comprising supporting structure, means for enga-ging a boxrblank and sheet material assembly registered "upn said supporting structure, mechanism foi` reciprocating said means to transport said 'assembly comprising a chain, and means for nicely determining at least one extreme posijec'ting therefrom, is aligned, structure im@0 ilo iso

tion of' said means by takingup the lost motion between elements of said chain. f

9. A box machine comprising supporting structure, means for engaging a box blank and overlapping sheet material assembly registered upon said supporting structure, mechanism for reciprocating said means to transport said assembly, comprising a chain, and resilient stop structure engaged by an abutment movable with said chain as it approaches the limit of its travel in at least one direction. n

10. A box machine comprising` form block structure, .supporting structure, stationary stop structure mounted upon said supporting structure, movable stop structure utilized with said stationary stop structure in the alignment of a box blank with said form block structure, and means for moving said movable stop structure toeiiect movement of the aligned box blank along said supporting structure from said stationary stop structure toward said form block structure.

11. -A box machine comprising form block structure,mechanism for supplying box components to said form block structure, and means operating in timed-relation to said `mechanism for delivering to said form block structure assemblies each comprising a box component and adhering sheet material projecting therefrom.

12. A box machine comprising form block structure, mechanism for cutting box components from strip-like box material and supplying them to said form block structure,

and means operating in timed relation to said mechanism for delivering to said form block structure assemblies eachV comprising a box component and adhering .sheet material projccting therefrom.

13. A box machine comprising form block structure, mechanism for supplying box components to said form block structure, a supporting structure upon which assemblies each comprising a box component-*and adhering sheet material projecting therefrom are aligned, and means operating in timed relation to said mechanism for moving said assemblies along said supporting structure toward said orm block structure, for'association with said other box components supplied thereto. j 14;. A box machine comprising form block structure, boxforming mechanism cooperating therewith, means tor supplying box components to said form block structure, and means operating intimed relation `to said structure. said mechanism and said supply means for delivering to said form block structurc an assembly comprising a box component and adhering sheet material projecting therefrom.'

15. A box machine comprising form block` structure, box-forming mechanism cooperating therewith to form a box, means operative in a region of said path for forming a box,

means for supplying box components to said form block structure at another region of vsaid path, supporting structure upon Which assemblies comprising box components in adhesivey engagement with overlapping sheet material are aligned in succession, and means for moving said assemblies from said table into the path of movement of said form block structure intermediate said regions.

17. A box machine comprising intermittently reciprocating form block structure. means for supplying box components to said structure While stationary, supporting structure upon Which assemblies comprising other box components in adhesive engagement-With projecting strip material are aligned, and means for moving said assemblies from said table into the path of movement of said structure to be engaged thereby.

18. A box machine comprising form block structure movable in a path, box forming mechanism operating in timed relation thereto and cooperating therewithin a region ot said path to form a box, means operative during said vbox-:torming operation Jfor cutting components of another box from box material, means operative after the boxforming operation is completed for delivering said cut components to said form block structure in another region of its path, supporting structure upon which an assembly comprising a box component adhesively attached tor strip material projecting therefrom, is aligned, and means for moving said assemblyy from said supporting structure into the path of movement of said form block structure intermediate said regions.v

19. A box machine comprising formblock structure, means for holding one or more box components against said structure, a table upon which an assembly comprising another box component adhesively attached to strip material is aligned,and means for moving said .assembly from said table to said form block structure.

20. A box machine comprising reciprocating form block structure, units carrying boxforming mechanism disposed on opposite sides of and adjustable toward and away from the path of movementof said structure, mechanism mounted upon one of said units for delivering box components to said form block structure, a table mounted upon the other unit, and mechanism carried by said other unit for moving box blanks along said table into the path of movement of said form block structure.

21. A box machine comprising a form block, means for engaging a box blank and sheet material assembly, and mechanism for reciprocating said means to transport said assembly comprising a chain, a driving member therefor, and driving means for said member adjustable to predetermine the forward position of said structure for box blanks of different dimensions.

22. A box-wrapping machine having' a form block, struct-ure adjacent said form block upon which boxes and wrappers are assembled, and means for transferring said assembled boxes from said structure to said form block comprising` a reciprocating carriage having a plate for engaging the rear wall of a box and relatively movable gripper structure for clamping said wall against said plate.

Q3. A box-wrapping machine having a form block, structure adjacent said form block upon which boxes and Wrappers are assembled, stationary stop structure for engaging a side of a. box to align it with a side of the form block, and a reciprocating carriage for transferring the assembled boxes from said structure to said form block comprising a plate adapted to engage the rear wall of a box while the adjacent wall is engaged by said stationary stop structure, and relatively movable gripper structure for clamping said rear wall of the aligned box against said plate whereby forward move-- ment of the carriage pushes the box assembly toward said form block in alignment thereto.

24. A box-Wrapping machine having a form block, structure adjacent said form block upon which boxes and wrappers are assembled, a reciprocating carriage movable transversely of said support toward and away from said form block, a fixed plate for engaging the rear wall of a box, mounted on said carriage, relatively movable gripper structure mounted on said carriage, and means foi` actuating said gripper structure to clamp the rear wall of each box against said plate at the beginning of each forward movement of the carriage.

25. A box-wrapping machine having a form block structure adjacent said form block upon which boxes and wrappers are assembled, a reciprocating carriage for transfer'- ring the assemblies from said structure to said form block comprising means for engaging and holding the rear Wall of a box, and stationary stop structure adjacent one side of the path of movement of said carriage for aligning the assemblies with respect to said form block before their transfer by said carriage.

26. A box wrapping machine having a form block, structure adjacent said form block upon which boxes and wrappers are assembled, stationary stop structure for aligning the assemblies with said form block, a reciprocating carriage for transferring the assemblies from said structure to the form block,'and stop structure mounted on said carriage and cooperating with said stationary stop structure in alignment with each assembly.

27. A box-wrapping machine having a form block, structure adjacent said form block upon which boxes and wrappers are assembled, a carriage, structure for guiding said carriage in its movement toward and away from said form block, means for effecting reciprocation of said carriage comprising a chain connected thereto, gripper structure mounted on said carriage, and means for actuating the gripper structure to clamp the rear Wall of a box for transfer to the form block by forward movement of said carriage and for actuating the gripper structure, substantially upon completion of the return movement of the carriage, to open position.

28. A box wrapping machine comprising a vertically reciprocating form block, structure adjacent the path of said form block upon which boxes and wrappers are assembled, a carriage, means mounted thereon for holding the rear wall of a box and comprising relatively movable gripper members, a cam controlling the operation of said gripper members, and means effecting reciprocation of said carriage to transfer the assemblies from said structure into the path of said form block, said cam effecting closure of said gripper members substantially at the beginning of each forward movement of the carriage.

29. A box wrapping machine comprising a vertically reciprocating form block, Structure adjacent the path of said form block upon which boxes and Wrappers are assembled, a reciprocating carriage, a driving chain therefor, means mounted on said carriage for holding the rear wall of a box and comprising relatively movable gripper members, a cam controlling the actuation of said gripper members, and a cam effecting carriage driving reciprocation of said chain in timed relation to said form block to transfer the assemblies from said structure into the path of said form block, said first cam effecting closure of said gripper members at substantially the beginning of each forward movement of the carriage.

ERNEST G. RIDER.

SERTIHCATE F CRRECTION.

Patent No. 1,907,004. May 2, i933.

ERNEST G. RIDER.

It is hereby certified that error appears in the printeti specification of the above numbered patent requiring eorreetion as follows; Page 5, line 10, for "and" reati "end"; page .7, tine 78, eiaim 26, tot "with" read "of"; an that abe Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and seaied this 24th day of Gotober, A. D. 1933.

M. Hopkins (Seai) Acting Commissioner of Patents. 

